# The Three Butterflies vs Notes On Nature

The clearest difference is in-app purchases: Notes On Nature at none against The Three Butterflies's 1. Notes On Nature also leads on update cadence (every 6 weeks vs every 47 months) and iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. The Three Butterflies sells 1 one-off in-app purchase. Notes On Nature asks for nothing beyond the download.

The Three Butterflies ships an update every 47 months, Notes On Nature every 6 weeks. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | The Three Butterflies | Notes On Nature |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 6 weeks** |
| Size | 4 MB | 589 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [丽东 陈](https://appshunter.io/developer/1342184783) | [Habitat XR (PTY) Ltd](https://appshunter.io/developer/1658558688) |

## What reviewers say

### The Three Butterflies

[App page](https://appshunter.io/ios/app/the-three-butterflies/id674364667)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all pages | $0.99 | one-time |


### Notes On Nature

[App page](https://appshunter.io/ios/app/notes-on-nature/id6450712455)

**In-app purchases:** none


## Frequently asked questions

### Is The Three Butterflies free?

The Three Butterflies is free to download, with in-app purchases available.

### Is Notes On Nature free?

Notes On Nature is free to download, with no in-app purchases.

### Do The Three Butterflies or Notes On Nature have ads?

Neither The Three Butterflies nor Notes On Nature shows ads.

### Which is updated more often, The Three Butterflies or Notes On Nature?

The Three Butterflies ships an update every 47 months, and Notes On Nature every 6 weeks. Most recently, The Three Butterflies was updated on November 1, 2026 and Notes On Nature on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*